"Steven P. McNicoll" wrote in message
nk.net...
There isn't any. The FARs tend to prohibit things, not authorize them.
So where in the FARs is there prohibition of VFR ops above FL180?



So you're saying one could operate VFR at FL330?


Sure, as long as you're not in Class A airspace.

Other than the special exception listed of Glider ops in a blocked off
region, where is there airspace that is NOT Class A at FL330? The glider ops
at altitudes over FL180 is still Class A, but given special handling. I
seriously doubt they are mixing jets and gliders at those altitudes WITHIN
those areas.